Bladder-type accumulators HAB - CE

Баллонный аккумулятор HAB2,5-350-6X/0G07G-2N111-CE+EAC арт. R901451721 — это электрохимический источник питания, который необходим для хранения и выдачи электрической энергии. Прибор состоит из баллона, внутри которого находятся электроды и электролит. 

Баллонный аккумулятор нужен для обеспечения непрерывного питания электрооборудования в различных отраслях промышленности, таких как автомобильная, авиационная, медицинская, телекоммуникационная и другие.

Баллонный аккумулятор HAB2,5 устанавливают в специальных кожухах или шкафах, которые обеспечивают его защиту от внешних воздействий и безопасность при эксплуатации.

Основные свойства баллонного аккумулятора HAB2,5-350-6X/0G07G-2N111-CE+: 

• высокая емкость; 
• надежность; 
• долговечность;
• возможность быстрой зарядки. 

Отличие баллонного аккумулятора HAB2,5 от других типов аккумуляторов в том, что имеет более высокую энергетическую плотность и может работать в широком диапазоне температур.

Баллонный аккумулятор HAB2,5-350-6X/0G07G-2N111-CE+EAC арт. R901451721 изготавливается из специальных материалов, обеспечивающие ему высокую производительность и долговечность. Срок эксплуатации баллонного аккумулятора зависит от условий эксплуатации и может служить нескольких лет.
 

Description

• Component series 6X
• Nominal capacity 1 … 50 l
• Maximum operating pressure 350 bar

Features

• Hydraulic accumulator according to Pressure Equipment Directive 2014/68/EU
• Bladder material for different applications

Product description

Applications:

• Energy storage in systems with intermittent operation

• Energy reserve for emergencies

• Compensation for leakage loss

• Shock and vibration damping

• Flow compensation in case of pressure and temperature changes

Refer to data sheet RE 50171 for extensive details about the design HAB-6X and applications with CE certification.

Function, section

General information

Hydraulic accumulators are hydrostatic devices capable of storing a certain amount of energy in order to release it to the hydraulic system when needed.

Fluids only possess low compressibility; however, gases are highly compressible. The working principle of all gas-loaded hydraulic accumulators is based on this difference.

The difference between bladder and diaphragm type accumulators lies in the type of separator element. Hydraulic accumulators essentially consist of a fluid section and a gas section with a gas-tight separator element.

The fluid section has a connection to the hydraulic circuit.

If a higher liquid pressure is applied to a specific quantity of pressurized gas, the gas volume decreases as the liquid pressure increases, with the gas pressure increasing with the liquid pressure.

If the pressure of the fluid decreases, the fluid is pushed back into the hydraulic system by the expanding gas until the pressure is balanced again.

Bladder-type accumulator

Bladder-type accumulators consist of a seamless cylindrical pressure container (1) made of high-strength steel. An elastic bladder (2) mounted inside the container separates the accumulator into a gas side and a fluid side.

Via the gas valve (4), the bladder is filled with nitrogen up to the intended gas filling pressure p0.

The oil valve (3) located inside the oil port of the bladder-type accumulator closes if the pressure on the gas side is higher compared to the fluid side. This prevents the bladder from entering the oil channel and being destroyed.

When the minimum operating pressure is reached, a small fluid volume (approx. 10% of the hydraulic accumulator's nominal volume) should remain between the bladder and the oil valve in order to prevent the bladder from hitting the valve during each expansion process.

The gas valve (4) consists of sealing cap (4.1), gas valve insert (4.2), gas prefill valve body (4.3), and O-ring (4.4). These parts can be replaced individually.

The type cap (7) includes the technical data and features of the hydraulic accumulator.

Symbol

1	Containers
2	Bladder
3	Oil valve
4	Gas valve
5	Gas valve support
6	Nut
7	Type cap
8	Cover cap
9	Protective cap of oil valve

Type code

Ordering code

01	02		03		04		05	06	07		08	09	10	11	12		13	14
HAB		-		-	6X	/	0		G	-	2		1	1	1	-

Device designation
01	Diaphragm type accumulators										HAB
Nominal capacity
02	1 l										1
	2,5 l										2,5
	4 l										4
	6 l										6
	10 l										10
	20 l										20
	24 l										24
	32 l										32
	50 l										50
Maximum operating pressure
03	350 bar 1 … 6 l										350
	330 bar 1 … 50 l										330
Component series
04	Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions)										6X
Gas filling pressure
05	0 bar										0
Port size for hydraulic fluid 1)
06		1	2.5	4	6	10	20	24	32	50
	G3/4	✔	‒	‒	‒	‒	‒	‒	‒	‒	G05
	G1 1/4	‒	✔	✔	✔	‒	‒	‒	‒	‒	G07
	G2	‒	‒	‒	‒	✔	✔	✔	✔	✔	G09
Type of mounting (oil port form)
07	Thread with sealing surface, radial on the inside										G
Gas port form
08	Gas valve for charging and test device										2
Bladder material 1)
09	NBR										N
	ECO										E
	FKM										F
	HNBR										H
Tank material 1)
10	Steel										1
Surface of the tank inside 1)
11	Steel										1
Surface of the connection side 1)
12	Steel										1
Certification acceptance
13	CE (DGRL 2014/68/EU)										CE
	Instructions for use										BA
14	Further details in the plain text e. g. SO variant										*

Technical data

general

Nominal capacity	l	1	2.5	4	6	10	20	24	32	50
Weight	kg	7	10	16.5	20	32	53	61	85	123
Design		Bladder-type accumulators
Installation position		Bottom fluid connection socket, others upon request
Mounting type		With clamping collars and console
Line connection		Screw-in thread

hydraulic

Nominal capacity	VNenn	l	1	2.5	4	6	10	20	24	32	50
Effective gas volume	Veff	l	1	2.4	3.7	5.9	9.2	18.1	24.5	33.4	48.7
Maximum flow	qmax	l/min	240	450	450	450	900	900	900	900	900
Maximum operating pressure	pmax	bar	330	330	330	330	330	330	330	330	330
		bar	350	350	350	350	-	-	-	-	-
Maximum admissible pressure fluctuation range	Δpdyn	bar	200	200	200	200	125	125	125	125	125
Hydraulic fluid 1)			Hydraulic oil according to DIN 51524
Hydraulic fluid temperature range	NBR	°C	-15 … +80 1)
	ECO	°C	-32 … +80
	FKM	°C	-20 … +80
	HNBR	°C	-30 … +80

1)	Other hydraulic fluids upon request.

pneumatic

Charging gas			Nitrogen, cleanliness class 4.0, N2 = 99.99 vol. %
Gas filling pressure	p0	bar	0

Hydraulic fluids	Material
Mineral oils	NBR
	ECO
	HNBR
HFC	NBR
HFD	FKM

	NBR ‒ Acrylonitrile-butadiene rubber
	ECO ‒ Epichlorohydrin rubber
	HNBR ‒ Hydrated acrylonitrile butadiene rubber
	FKM ‒ Fluorocarbon rubber

(For applications outside these values, please consult us!)

Diagrams/characteristic curves

Calculation

Pressures

The following pressures are of decisive importance for the calculation of an accumulator:

p0 Gas filling pressure at room temperature and empty fluid chamber

p0 (t) Gas filling pressure at operating temperature

p0 (tmax) Gas filling pressure at maximum operating temperature

p1 Minimum operating pressure

p2 Maximum operating pressure

In order to achieve the best utilization of the accumulator volume possible as well as a long life cycle, compliance with the following values is recommended:

p0 (tmax) ~ 0.9 × p1 (1)

The highest hydraulic pressure should not exceed four times the filling pressure, as otherwise too much stress will be put on the elasticity of the bladder, resulting in too great a compression change with strong gas heating:

p2 ≦ 4 × p0 (2)

The life cycle of the accumulator bladder is the higher the smaller the difference between p1 and p2 is. However, the operating ratio of the maximum accumulator capacity will also be reduced accordingly.

Oil volume

According to the pressures p0 … p2, the gas volumes V0 … V2 will result.

In this process, V0 simultaneously is the nominal volume of the accumulator.

The available oil volume ΔV corresponds to the difference of the gas volumes V1 and V2:

ΔV ≦ V1 – V2 (3)

The gas volume variable within a pressure differential is determined by the following equations:

• For an isothermal state change of gases, i.e. when the change of the gas cushion happens so slowly as to leave sufficient time for a complete thermal exchange between the nitrogen and its environment, therefore keeping the temperature constant, the following applies:
  p0 × V0 = p1 × V1 = p2 × V2 (4.1)

• For an adiabatic state change, i.e. a quick change of the gas cushion accompanied by a temperature change of the nitrogen, the following applies:
  p0 × Vχ0 = p1 × Vχ1 = p2 × Vχ2 (4.2)

χ = ratio of the specific gas heats (adiabatic exponent), for nitrogen = 1.4

In practice, state changes rather follow adiabatic laws. Often charging is isothermal and discharge is adiabatic.

Considering the equations (1) and (2), ΔV is between 50% and 70% of the nominal accumulator volume. The following applies as a guiding principle:

V0 = 1.5 … 3 × ΔV (5)

Calculation diagram

For graphic determination, the formulas (4.1) and (4.2) are converted into diagrams. Depending on the task, the available oil volume, the accumulator size or the pressures can be determined.

Correction factor Ki and Ka

The equations (4.1) and (4.2) apply to ideal gases only.

The behavior of real gases, however, will show considerable variation at operating pressures above 200 bar which will have to be accounted for by correction factors. These can be taken from the following diagrams.

The correction factors the ideal sampling volume ΔV is to be multiplied with lie within a range of 0.6 … 1.

Application of the calculation diagrams

Isothermal state changes p0 = 1 … 90 bar

Isothermal state changes p0 = 100 … 300 bar

Adiabatic state changes p0 = 1 … 90 bar

Adiabatic state changes p0 = 100 … 300 bar

Fields of application

Applications

Various applications exist for hydro-pneumatic accumulators:

▶ Energy storage in order to save pump drive power in intermittent operation systems.

▶ Energy reserve for emergencies, e.g. upon failure of the hydraulic pump.

▶ Compensation of leakage losses.

▶ Impact and vibration absorption in case of periodic vibrations.

▶ Volume compensation in case of pressure and temperature changes.

Mode of operation

Fluids are almost incompressible and therefore cannot store pressure energy. Hydro-pneumatic Rexroth accumulators use the compressibility of a gas for fluid storage. Exclusively use nitrogen of cleanliness class 4.0!

N2 = 99.99 vol. %

Dimensions

Dimensions in mm

Nominal capacity	Ordering code/type	h	Ød	a		b		Øe	Øf	Øg		SW	Weight
l		mm	mm	mm		mm			mm	mm		mm	kg
1	HAB1-330-6X/...G05G...	320.5 ‒ 354.5	112.5 ‒ 115.5	65	± 3 mm	715	± 3 mm -	G3/4	52.4	23	H7	50	7
	HAB1-350-6X/...G05G...	320.5 ‒ 354.5	112.5 ‒ 115.5	65	± 3 mm	715	± 3 mm -	G3/4	52.4	23	H7	50	7
2.5	HAB2,5-330-6X/...G07G...	520.5 ‒ 562.5	112.5 ‒ 115.5	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	10
	HAB2,5-350-6X/...G07G...	520.5 ‒ 562.5	112.5 ‒ 115.5	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	10
4	HAB4-330-6X/...G07G...	400.5 ‒ 442.5	166.3 ‒ 169.7	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	16.5
	HAB4-350-6X/...G07G...	400.5 ‒ 442.5	166.3 ‒ 169.7	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	16.5
6	HAB6-330-6X/...G07G...	535.5 ‒ 569.5	166.3 ‒ 169.7	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	20
	HAB6-350-6X/...G07G...	535.5 ‒ 569.5	166.3 ‒ 169.7	65	± 3 mm	715	± 3 mm -	G1 1/4	52.4	36	H8	50	20
10	HAB10-330-6X/...G09G...	559 ‒ 591	216.8 ‒ 221.2	101.5	± 3 mm	715	± 3 mm -	G2	76	54	H7	70	32
20	HAB20-330-6X/...G09G...	869 ‒ 901	216.8 ‒ 221.2	101.5	± 3 mm	715	± 3 mm -	G2	76	54	H7	70	53
24	HAB24-330-6X/...G09G...	1004 ‒ 1036	216.8 ‒ 221.2	101.5	± 3 mm	715	± 3 mm -	G2	76	54	H7	70	61
32	HAB32-330-6X/...G09G...	1389 ‒ 1421	216.8 ‒ 221.2	101.5	± 3 mm	715	± 3 mm -	G2	76	54	H7	70	85
50	HAB50-330-6X/...G09G...	1904 ‒ 1936	216.8 ‒ 221.2	101.5	± 3 mm	715	± 3 mm -	G2	76	54	H7	70	123

Project planning information

Project planning information

Bladder-type accumulators have to be safely and permanently fastened to the machine or system using mounting elements. The fastening is intended to keep the oil port tension-free. Particularly, no tension forces or static or dynamic inertia forces should be applied to the oil port.

Thermal expansion of the supporting structure and vibrations originating from the environment should be considered in the selection of suitable mounting points.

Accessories

HAB mounting elements

1	Clamp
2	Console
3	Rubber support ring

Clamp type		Material number	Accumulator size
			1	4		20
			2,5	6	10	24
						35	50
Clamp	110-120	1531316021	1
Clamp	160-170	1531316022		2
Clamp	218-228	1531316026			1	2
Clamp	224-230	1531316005					2
Console		1531334008			1	1	1
Rubber support ring		1530221042			1	1	1

Console and rubber support ring

Console (material number: 1531334008)
Dimensions in mm

Rubber support ring (material number: 1530221042)
Dimensions in mm

Mounting clamps

Type F1
Dimensions in mm

Mounting clamps

Type F2
Dimensions in mm

Clamp type		A	B	C	⌀D	E	H	K	M	S	Material number
		mm	mm	mm	mm	mm	mm	mm		mm
Clamp	110-120 F1	135	96	150	110 ‒ 120	50	64 ‒ 69	-	M8	3	1531316021
Clamp	160-170 F1	237	147	200	160 ‒ 170	50	90 ‒ 95	-	M8	4	1531316022
Clamp	218-228 F1	237	147	258	218 ‒ 228	50	120 ‒ 125	-	M8	4	1531316026
Clamp	224-230 F2	254	212	244	224 ‒ 230	50	120 ‒ 123	295	M12	3	1531316005

Charging and test device

Test case	Material number
for bladder-type accumulator (HAB)	0538103011
Case (wihout contents)	R901079781
Charging and test valve HAB	0538103005
Pressure gauge 0 … 250 bar	1537231001
Hose l = 2.5 m with adapter piece form "D"	1530712005
for bladder and diaphragm accumulator (HAB/HAD)	0538103014
Components as above plus filling and test valve HAD	0538103006

Accessory parts to be ordered separately	Material number
Pressure gauge 0 … 25 bar	R900033955
Pressure gauge 0 … 60 bar	1537231002
Pressure gauge 0 … 400 bar	1537231005
Adapter piece
Form "F"	1533391010
Form "GB"	1533391011
Form "USA"	1533391012
Form "KR"	1533391013
Form "J"	1533391014
Form "RUS"	1533391015
Hose l = 5 m with transition socket form “D”	1530712006

Dimensions of charging and test valve

1 valve body with check valve, discharge valve, pressure gauge connection, and gas hose connection.

Dimensions in mm

1	Spare part, Material no. 1 537 410 065
2	Adapter see "Adapter from nitrogen bottle..."

Adapter for nitrogen bottle to cap nut
Dimensions in mm

Material no. 1533391010	Material no. 1533391013	Material no. R900034782
Material no. 1533391011	Material no. R900216133	Material no. R900708208
Material no. 1533391012	Material no. 1533391015	Material no. R901070776

Country	Material number
	1​533391010	1​533391011	1​533391012	1​533391013	R900216133	1​533391015	R900034782	R900708208	R901070776
Brazil		x
Bulgaria		x
China									x
France	x
Greece		x
Great Britain		x
India		x
Italy								x
Japan					x
Canada			x
Korea North				x
Korea South				x
Malaysia		x
Mexico	x
Romania	x
Russia						x
Spain		x
Saudi Arabia	x
Singapore		x
Taiwan							x
Turkey		x
USA			x
Other countries on request.

Accumulator adapter for accumulator shut-off blocks type ABZSS

Please select the matching type according to data sheet 50131.

Fig. 2
Dimensions in mm

Accumulator shut-off block	Accumulator type	Accumulator DN	Accumulator adapter		D	ØD2		H1	H2		M		O		O1	S
			ABZSS10, ABZSS20	ABZSS08		ABZSS10, ABZSS20	ABZSS08		ABZSS10, ABZSS20	ABZSS08	ABZSS10, ABZSS20	ABZSS08	ABZSS10, ABZSS20	ABZSS08		ABZSS10, ABZSS20	ABZSS08
						mm	mm	mm	mm	mm					mm
ABZSS08 ABZSS10 ABZSS20	Bladder-type accumulator Data sheet 50171	1	S10	S105	G3/4A	39.9	35	28	15.5	15.5	M33 x 2	M20 x 1.5	29.7 x 2.8	24 x 2	18 x 2.5	SW41	SW36
		2.5	S12	S107	G1 1/4A			37	16.5	17.5					30 x 3	SW46	SW46
		4
		6
		10	S13	S109	G2A			43	20.5	18.5					48 x 3	SW65	SW65
		20
		35
		50

Adapter to metric thread

(HAB..–1X to HAB..–4X and –6X)

Dimensions in mm

Nominal capacity	ISO 228						H	L2	ØD3	ØD4	SW
	D2	MA		D1	MA
l		Nm	Tolerance Nm		Nm	Tolerance Nm	mm	mm	mm		mm
1	G3/4	180	+ 18 0	M30 x 1.5	180	+ 18 0	32	28	46	12	41
2.5 ... 6	G1/14	450	+ 45 0	M40 x 1.5	400	+ 40 0	43	37	60	20	55
10 ... 50	G2	500	+ 50 0	M50 x 1.5	450	+ 45 0	41	44	78	32	70

Adapter for reduction of pipe connection

Dimensions in mm

Nominal capacity	ISO 228						H	L2	ØD3	ØD4	SW
	D2	MA		D1	MA
l		Nm	Tolerance Nm		Nm	Tolerance Nm	mm	mm	mm		mm
1	G3/4	180	+ 18 0	G3/8	70	+ 7 0	8	28	38	12	32
2.5 ... 6	G1/14	450	+ 45 0	G1/2	115	+ 12 0	8	37	60	24	55
2.5 ... 6	G1/14	450	+ 45 0	G3/4	180	+ 18 0	8	37	60	24	55
10 ... 50	G2	500	+ 50 0	G1/2	115	+ 12 0	20	44	75	30	65
10 ... 50	G2	500	+ 50 0	G3/4	180	+ 18 0	20	44	75	30	65
10 ... 50	G2	500	+ 50 0	-	310	+ 31 0	20	44	75	30	65
10 ... 50	G2	500	+ 50 0	G1 1/2	450	+ 45 0	40	44	75	32	65

Pressure monitoring

Adapter for pressure gauge, material number 1535400171

Gas valve

Spare part kit for gas valve		Material number R901438300
Components		Quantity
1	Protective cap	1
2	Sealing cap series 60	1
3	Valve insert series 60	1
4	Gas valve series 60	1
5	O-ring	1
6	Nut	1

Spare parts

Seal kit (position 1 … 4)

Accumulator size	Material number	Material number
	NBR, HNBR, ECO	FKM
l
1	R901441920	-
2.5 ... 6	R901441921	-
10 ... 50	R901441922	R901441923

Accumulator size	10 Spare bladder with gas valve and seal kit				20 Holding ring		30 Oil valve kit consisting of holding ring and oil valve
	Material number				Material number
	NBR	ECO	FKM	HNBR	NBR, HNBR, ECO	FKM
l
1	R901437540	-	-	R901438250	R901438280	R901438290	-
2.5	R901437541	-	-	R901438251	R901438280	R901438290	-
4	R901437542	R901438234	-	R901438252	R901438280	R901438290	R901438270
6	R901437543	-	-	R901438253	R901438280	R901438290	R901438270
10	R901437544	R901438235	R901438240	R901438254	R901438281	R901438291	R901438271
20	R901437545	-	R901438241	R901438255	R901438281	R901438291	R901438271
24	R901437546	-	-	R901438256	R901438281	R901438291	R901438271
32	R901437547	R901438236	R901438242	R901438257	R901438281	R901438291	R901438271
50	R901437548	-	R901438243	R901438258	R901438281	R901438291	R901438271

Safety Instructions

Important notices

Intended use

Rexroth bladder-type accumulators type HAB..-6X are intended for the set-up of hydraulic drive systems in stationary mechanical engineering and plant construction.

In mobile applications or applications in which acceleration forces are applied to the bladder-type accumulator during intended use, its use is permitted only following release by the competent Rexroth product manager. Please contact technical sales for this.

Rexroth bladder-type accumulators type HAB..-6X are not intended for private use.

Safety instructions for hydraulic accumulators

For the hydraulic accumulator type HAB..-6X, observe the operating instructions 50171-B. The machine end-user will have sole responsibility for compliance.

General notices for hydraulic accumulators in hydraulic system can be found in ISO 4413.

Keep all documents included in the delivery in a safe place; they will be required by the expert in recurring tests.

Legal provisions

Hydraulic accumulators are pressure vessels and subject to the application national provisions and/or regulations valid at the place of installation.

In Germany, the Ordinance on Industrial Safety and Health (BetrSichV) applies.

Special regulations are to be observed in shipbuilding, aircraft construction, mining, etc.

Authorized persons

According to Ordinance on Industrial Safety and Health (BetrSichV), only authorized persons may carry out tests.

Authorized persons are such persons having obtained the required expert knowledge through professional training, experience and recent professional activity.

Safety equipment

Notice:

Hydraulic accumulators have to be secured against operation outside of the admissible limits according to Pressure Equipment Directive 2014/68/EU.

In order not to exceed the maximum operating pressure, we recommend the use of an accumulator shut-off block type ABZSS according to data sheet 50131.

Ordering codes

HAB--6X/G-111-Result count77 von77Display results listNominal volume [l]

12,5461020243250Maximum operating pressure [bar]

10203050330350Port size for hydraulic fluid

G05G 3/4" Pipe threadG07G1 1/4" Pipe threadG09G2" Pipe threadType of mounting for hydraulic fluidPipe thread with sealing surface radial

GPipe thread with sealing surface radialGas port form

Gas valve for filling and test device2Gas valve ISO 4570 8V13Gas valve 5/8"-18 UNFBladder material

Acrylonitrile-butadiene-rubber (33% acrylonitrile)NNBRAcrylonitrile-butadiene-rubber (28% acrylonitrile)TTNBREpichlorohydrin-rubberEECOFluor-RubberFFKMApproval

BAOperating instruction (EU)CEPED 2014/68/EU (EU)CE+NR13National requirement 13 (EU+Brazil)You have successfully finished your selection.

DocumentationAdd to basketProduct descriptionData sheetRequest CAD

Product description

Type code:HAB--6X/G-111-

Material number:

The following data were selected.
Type of mounting for hydraulic fluid	G	Pipe thread with sealing surface radial

Downloads

	Bladder-type accumulator Data Sheet | RE50171 | 2020-08-01 | English | PDF | 1.1MB Product Groups: Hydro-pneumatic accumulators, Oil treatment, Accumulators Type HAB
	Bladder-type accumulator, Type HAB..-6X Manual | RE50171-B | 2021-07-31 | English | PDF | 1.7MB Product Groups: Hydro-pneumatic accumulators